Home / 12,087.09-16,692.81-8,319.96

Finding the Fourth Proportional to 12,087.09, 16,692.81 and 8,319.96

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Solution

The fourth proportional to 12,087.09, 16,692.81 and 8,319.96 is: 11,490.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,087.09 : 16,692.81 = 8,319.96 : x
  2. Step 2: Convert to fraction form
    12,087.09/16,692.81 = 8,319.96/x
  3. Step 3: Cross multiply
    12,087.09x = 16,692.81 × 8,319.96
  4. Step 4: Simplify right side
    12,087.09x = 138,883,511.49
  5. Step 5: Solve for x
    x = 138,883,511.49/12,087.09
  6. Step 6: Final answer
    x = 11,490.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.